Which device is responsible for forwarding data packets between networks, similar to how traffic is directed on the Internet?

The device responsible for forwarding data packets between networks, akin to directing traffic on the Internet, is a router. A router connects different networks, ensuring that data is sent to its intended destination across various pathways. It does so by determining the best route for the data packets based on factors like network conditions and destinations.

Routers operate at the network layer of the OSI model and have the capability to handle the addressing information within packets. When data is transmitted through the internet, routers play a pivotal role in directing it from the source to its destination by examining the destination IP address and making forwarding decisions.

In contrast, other devices like hubs, switches, and bridges serve different functions. Hubs operate at a lower level, simply transmitting data to all connected devices without any filtering or intelligent routing based on addresses. Switches, while they do direct traffic efficiently within a single network by examining MAC addresses, do not connect different networks. Bridges are used to connect multiple segments of the same network but lack the sophistication needed for routing data across different networks.